How to use the Hexagon Cubic Feet Calculator
- Measure one edge of the hexagon, rather than its total width. A regular hexagon has six equal sides and equal angles.
- Choose the shape mode, where available, and a unit for each dimension. Enter the number of identical objects.
- Select Calculate. Review the result and its working; if you change an input, calculate again before copying or sharing.
Hexagon formula
Convert each length to feet, apply the displayed solid-volume formula, then multiply by the number of identical objects.
(3√3 ÷ 2) × side² × height
What the terms mean
- Regular hexagon side
- A measured length in the selected unit; it is converted to feet before volume is calculated.
- Prism height
- A measured length in the selected unit; it is converted to feet before volume is calculated.
- Number of identical items
- The whole-number count of objects with the same entered dimensions.
Hexagon worked examples
Measure a regular hexagonal container
A regular hexagonal prism has six equal 2 ft sides and a height of 3 ft.
- (3√3 ÷ 2) × side² × height
- side = 2 ft
- height = 3 ft
- 31.176915 ft³ × 1 = 31.176915 ft³
Answer: 31.176915 ft³. Cubic yards: 1.154701 yd³; Litres: 882.831906 L.
Measure a tall hexagonal prism
A regular hexagonal prism has a side length of 1 ft and a height of 6 ft.
- (3√3 ÷ 2) × side² × height
- side = 1 ft
- height = 6 ft
- 15.588457 ft³ × 1 = 15.588457 ft³
Answer: 15.588457 ft³. Cubic yards: 0.57735 yd³; Litres: 441.415953 L.
Hexagon Cubic Feet Calculator FAQs
Is side length the distance across the hexagon?
No. Side length is one edge. Across opposite vertices is twice the side length for a regular hexagon.
Can this calculate a hexagonal planter?
Yes, if its inside cross-section is regular and constant with height. Use inside measurements for capacity.
Measurement guide for Hexagon
Measure one edge of the regular hexagon. A width measured across flats or corners is not its side length.
Assumptions and limits
This model does not calculate irregular six-sided footprints. Split an irregular footprint into simpler shapes.
Check your result
Check the dimensions converted to feet in the working. For similar solids, doubling every dimension increases volume by a factor of eight.